A process for continuous preparation of halogenated alkoxyethane of general formula XCIHCCF.sub.2OR, where X is Cl or F and OR is C.sub.1-4 alkoxy, the process comprising a step of introducing in a plate reactor reaction components comprising (i) a compound of general formula XCIHCCYF.sub.2, where each of X and Y is independently Cl or F, (ii) a base, and (iii) a C.sub.1-4 alkanol, wherein (a) the plate reactor comprises a fluidic module defining one or more fluidic path(s) through which the reaction components flow as a reaction mixture, and (b) the halogenated alkoxyethane is formed at least upon the reaction components mixing, with the so formed halogenated alkoxyethane flowing out of the plate reactor in a reactor effluent, and (c) the base is one that forms a salt soluble in the alkanol during formation of the halogenated alkoxyethane.

A method of purifying crude sevoflurane comprising (i) providing crude sevoflurane and an aqueous base to a first centrifugal separator, wherein the crude sevoflurane comprises sevoflurane and hexafluoroisopropanol; (ii) mixing the crude sevoflurane and the aqueous base in the first centrifugal separator; and (iii) separating the sevoflurane from the aqueous base in the first centrifugal separator, thereby purifying the crude sevoflurane.

A method of purifying crude sevoflurane comprising (i) providing crude sevoflurane and an aqueous base to a first centrifugal separator, wherein the crude sevoflurane comprises sevoflurane and hexafluoroisopropanol; (ii) mixing the crude sevoflurane and the aqueous base in the first centrifugal separator; and (iii) separating the sevoflurane from the aqueous base in the first centrifugal separator, thereby purifying the crude sevoflurane.

A compound represented by the following formula (1):

##STR00001## wherein R.sup.1 is a 2n-valent group having 1 to 60 carbon atoms; R.sup.2 to R.sup.5 are each independently a linear, branched, or cyclic alkyl group having 1 to 30 carbon atoms, an aryl group having 6 to 30 carbon atoms, an alkenyl group having 2 to 30 carbon atoms, an alkoxy group having 1 to 30 carbon atoms and optionally having a substituent, a halogen atom, a nitro group, an amino group, a carboxylic acid group, a group in which a hydrogen atom of a hydroxy group is replaced with a vinylphenylmethyl group, a group selected from the group consisting of groups represented by the following formula (A), a thiol group, or a hydroxy group, wherein at least one of the R.sup.2 to the R.sup.5 is a group selected from a group represented by the formula (A); m.sup.2 and m.sup.3 are each independently an integer of 0 to 8; m.sup.4 and m.sup.5 are each independently an integer of 0 to 9, provided that m.sup.2, m.sup.3, m.sup.4, and m.sup.5 are not 0 at the same time; n is an integer of 1 to 4; and p.sup.2 to p.sup.5 are each independently an integer of 0 to 2:

##STR00002##

A compound represented by the following formula (1):

##STR00001## wherein R.sup.1 is a 2n-valent group having 1 to 60 carbon atoms; R.sup.2 to R.sup.5 are each independently a linear, branched, or cyclic alkyl group having 1 to 30 carbon atoms, an aryl group having 6 to 30 carbon atoms, an alkenyl group having 2 to 30 carbon atoms, an alkoxy group having 1 to 30 carbon atoms and optionally having a substituent, a halogen atom, a nitro group, an amino group, a carboxylic acid group, a group in which a hydrogen atom of a hydroxy group is replaced with a vinylphenylmethyl group, a group selected from the group consisting of groups represented by the following formula (A), a thiol group, or a hydroxy group, wherein at least one of the R.sup.2 to the R.sup.5 is a group selected from a group represented by the formula (A); m.sup.2 and m.sup.3 are each independently an integer of 0 to 8; m.sup.4 and m.sup.5 are each independently an integer of 0 to 9, provided that m.sup.2, m.sup.3, m.sup.4, and m.sup.5 are not 0 at the same time; n is an integer of 1 to 4; and p.sup.2 to p.sup.5 are each independently an integer of 0 to 2:

##STR00002##

There is disclosed an extraction process for recovering aminoalcohols and glycols from aqueous streams of taurine production. The aqueous streams which contain aminoalcohols and/or glycols are first mixed with a base to increase pH and then extracted with C.sub.3-C.sub.6 alcohols, ketones, and ethers. The aqueous streams are then returned to their respective cyclic process for the production of taurine.

There is disclosed an extraction process for recovering aminoalcohols and glycols from aqueous streams of taurine production. The aqueous streams which contain aminoalcohols and/or glycols are first mixed with a base to increase pH and then extracted with C.sub.3-C.sub.6 alcohols, ketones, and ethers. The aqueous streams are then returned to their respective cyclic process for the production of taurine.

The present invention provides a compound represented by following formula (1),

##STR00001##

wherein R.sup.1 represents a 2n-valent group having 1 to 30 carbon atoms, each of R.sup.2 to R.sup.5 independently represents a straight, branched or cyclic alkyl group having 1 to 10 carbon atoms, an aryl group having 6 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, an alkoxy group having 1 to 30 carbon atoms, a halogen atom, a thiol group or a hydroxyl group, provided that at least one selected from R.sup.1 to R.sup.5 represents a group including an iodine atom and at least one R.sup.4 and/or at least one R.sup.5 represent/represents one or more selected from the group consisting of a hydroxyl group and a thiol group, each of m.sup.2 and m.sup.3 independently represents an integer of 0 to 8, each of m.sup.4 and m.sup.5 independently represents an integer of 0 to 9, provided that m.sup.4 and m.sup.5 do not represent 0 at the same time, n represents an integer of 1 to 4, and each of p.sup.2 to p.sup.5 independently represents an integer of 0 to 2.

The present invention provides a compound represented by following formula (1),

##STR00001##

wherein R.sup.1 represents a 2n-valent group having 1 to 30 carbon atoms, each of R.sup.2 to R.sup.5 independently represents a straight, branched or cyclic alkyl group having 1 to 10 carbon atoms, an aryl group having 6 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, an alkoxy group having 1 to 30 carbon atoms, a halogen atom, a thiol group or a hydroxyl group, provided that at least one selected from R.sup.1 to R.sup.5 represents a group including an iodine atom and at least one R.sup.4 and/or at least one R.sup.5 represent/represents one or more selected from the group consisting of a hydroxyl group and a thiol group, each of m.sup.2 and m.sup.3 independently represents an integer of 0 to 8, each of m.sup.4 and m.sup.5 independently represents an integer of 0 to 9, provided that m.sup.4 and m.sup.5 do not represent 0 at the same time, n represents an integer of 1 to 4, and each of p.sup.2 to p.sup.5 independently represents an integer of 0 to 2.

The present invention provides a compound represented by following formula (1),

##STR00001##

wherein R.sup.1 represents a 2n-valent group having 1 to 30 carbon atoms, each of R.sup.2 to R.sup.5 independently represents a straight, branched or cyclic alkyl group having 1 to 10 carbon atoms, an aryl group having 6 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, an alkoxy group having 1 to 30 carbon atoms, a halogen atom, a thiol group or a hydroxyl group, provided that at least one selected from R.sup.1 to R.sup.5 represents a group including an iodine atom and at least one R.sup.4 and/or at least one R.sup.5 represent/represents one or more selected from the group consisting of a hydroxyl group and a thiol group, each of m.sup.2 and m.sup.3 independently represents an integer of 0 to 8, each of m.sup.4 and m.sup.5 independently represents an integer of 0 to 9, provided that m.sup.4 and m.sup.5 do not represent 0 at the same time, n represents an integer of 1 to 4, and each of p.sup.2 to p.sup.5 independently represents an integer of 0 to 2.